Commit Graph

2266 Commits

Author SHA1 Message Date
Arnd Bergmann
f3217d6f2f firmware: xilinx: fix out-of-bounds access
The zynqmp_pm_set_suspend_mode() and zynqmp_pm_get_trustzone_version()
functions pass values as api_id into zynqmp_pm_invoke_fn
that are beyond PM_API_MAX, resulting in an out-of-bounds access:

drivers/firmware/xilinx/zynqmp.c: In function 'zynqmp_pm_set_suspend_mode':
drivers/firmware/xilinx/zynqmp.c:150:24: warning: array subscript 2562 is above array bounds of 'u32[64]' {aka 'unsigned int[64]'} [-Warray-bounds]
  150 |  if (zynqmp_pm_features[api_id] != PM_FEATURE_UNCHECKED)
      |      ~~~~~~~~~~~~~~~~~~^~~~~~~~
drivers/firmware/xilinx/zynqmp.c:28:12: note: while referencing 'zynqmp_pm_features'
   28 | static u32 zynqmp_pm_features[PM_API_MAX];
      |            ^~~~~~~~~~~~~~~~~~

Replace the resulting undefined behavior with an error return.
This may break some things that happen to work at the moment
but seems better than randomly overwriting kernel data.

I assume we need additional fixes for the two functions that now
return an error.

Fixes: 76582671eb ("firmware: xilinx: Add Zynqmp firmware driver")
Fixes: e178df31cf ("firmware: xilinx: Implement ZynqMP power management APIs")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20201026155449.3703142-1-arnd@kernel.org
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-09 18:35:35 +01:00
Arnd Bergmann
926e97852e ARM SCMI fixes for v5.10
Handful of fixes, some of them fixing issues since SCMI was merged.
 It indicates that it is getting used now and people are finding bugs.
 Fixes include unblocking multiple thread access with SMC/HVC transport,
 ARCH_COLD_RESET value, locking in notifications, avoiding workqueue
 name duplication with multiple instances of SCMI and adding missing
 Rx size initialisation when using buffers for repeat transmits.
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Merge tag 'scmi-fixes-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes

ARM SCMI fixes for v5.10

Handful of fixes, some of them fixing issues since SCMI was merged.
It indicates that it is getting used now and people are finding bugs.
Fixes include unblocking multiple thread access with SMC/HVC transport,
ARCH_COLD_RESET value, locking in notifications, avoiding workqueue
name duplication with multiple instances of SCMI and adding missing
Rx size initialisation when using buffers for repeat transmits.

* tag 'scmi-fixes-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_scmi: Fix duplicate workqueue name
  firmware: arm_scmi: Fix locking in notifications
  firmware: arm_scmi: Add missing Rx size re-initialisation
  firmware: arm_scmi: Expand SMC/HVC message pool to more than one
  firmware: arm_scmi: Fix ARCH_COLD_RESET

Link: https://lore.kernel.org/r/20201015123518.GA3839@bogus
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-10-26 12:40:02 +01:00
Linus Torvalds
2e368dd2bb ARM: SoC-related driver updates
Various driver updates for platforms. A bulk of this is smaller fixes or
 cleanups, but some of the new material this time around is:
 
  - Support for Nvidia Tegra234 SoC
  - Ring accelerator support for TI AM65x
  - PRUSS driver for TI platforms
  - Renesas support for R-Car V3U SoC
  - Reset support for Cortex-M4 processor on i.MX8MQ
 
 There are also new socinfo entries for a handful of different SoCs
 and platforms.
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC-related driver updates from Olof Johansson:
 "Various driver updates for platforms. A bulk of this is smaller fixes
  or cleanups, but some of the new material this time around is:

   - Support for Nvidia Tegra234 SoC

   - Ring accelerator support for TI AM65x

   - PRUSS driver for TI platforms

   - Renesas support for R-Car V3U SoC

   - Reset support for Cortex-M4 processor on i.MX8MQ

  There are also new socinfo entries for a handful of different SoCs and
  platforms"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (131 commits)
  drm/mediatek: reduce clear event
  soc: mediatek: cmdq: add clear option in cmdq_pkt_wfe api
  soc: mediatek: cmdq: add jump function
  soc: mediatek: cmdq: add write_s_mask value function
  soc: mediatek: cmdq: add write_s value function
  soc: mediatek: cmdq: add read_s function
  soc: mediatek: cmdq: add write_s_mask function
  soc: mediatek: cmdq: add write_s function
  soc: mediatek: cmdq: add address shift in jump
  soc: mediatek: mtk-infracfg: Fix kerneldoc
  soc: amlogic: pm-domains: use always-on flag
  reset: sti: reset-syscfg: fix struct description warnings
  reset: imx7: add the cm4 reset for i.MX8MQ
  dt-bindings: reset: imx8mq: add m4 reset
  reset: Fix and extend kerneldoc
  reset: reset-zynqmp: Added support for Versal platform
  dt-bindings: reset: Updated binding for Versal reset driver
  reset: imx7: Support module build
  soc: fsl: qe: Remove unnessesary check in ucc_set_tdm_rxtx_clk
  soc: fsl: qman: convert to use be32_add_cpu()
  ...
2020-10-24 10:39:22 -07:00
Linus Torvalds
68a3633694 Merge branch 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
Pull dmi update from Jean Delvare.

* 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  Replace HTTP links with HTTPS ones: DMI/SMBIOS SUPPORT
2020-10-21 11:15:42 -07:00
Linus Torvalds
270315b823 RISC-V Patches for the 5.10 Merge Window, Part 1
This contains a handful of cleanups and new features, including:
 
 * A handful of cleanups for our page fault handling.
 * Improvements to how we fill out cacheinfo.
 * Support for EFI-based systems.
 
 ---
 
 This contains a merge from the EFI tree that was necessary as some of the EFI
 support landed over there.  It's my first time doing something like this,
 
 I haven't included the set_fs stuff because the base branch it depends on
 hasn't been merged yet.  I'll probably have another merge window PR, as
 there's more in flight (most notably the fix for new binutils I just sent out),
 but I figured there was no reason to delay this any longer.
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Merge tag 'riscv-for-linus-5.10-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

Pull RISC-V updates from Palmer Dabbelt:
 "A handful of cleanups and new features:

   - A handful of cleanups for our page fault handling

   - Improvements to how we fill out cacheinfo

   - Support for EFI-based systems"

* tag 'riscv-for-linus-5.10-mw0' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (22 commits)
  RISC-V: Add page table dump support for uefi
  RISC-V: Add EFI runtime services
  RISC-V: Add EFI stub support.
  RISC-V: Add PE/COFF header for EFI stub
  RISC-V: Implement late mapping page table allocation functions
  RISC-V: Add early ioremap support
  RISC-V: Move DT mapping outof fixmap
  RISC-V: Fix duplicate included thread_info.h
  riscv/mm/fault: Set FAULT_FLAG_INSTRUCTION flag in do_page_fault()
  riscv/mm/fault: Fix inline placement in vmalloc_fault() declaration
  riscv: Add cache information in AUX vector
  riscv: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO
  riscv: Set more data to cacheinfo
  riscv/mm/fault: Move access error check to function
  riscv/mm/fault: Move FAULT_FLAG_WRITE handling in do_page_fault()
  riscv/mm/fault: Simplify mm_fault_error()
  riscv/mm/fault: Move fault error handling to mm_fault_error()
  riscv/mm/fault: Simplify fault error handling
  riscv/mm/fault: Move vmalloc fault handling to vmalloc_fault()
  riscv/mm/fault: Move bad area handling to bad_area()
  ...
2020-10-19 18:18:30 -07:00
Linus Torvalds
09a31a7e37 MIPS updates for v5.10:
- removed support for PNX833x alias NXT_STB22x
 - included Ingenic SoC support into generic MIPS kernels
 - added support for new Ingenic SoCs
 - converted workaround selection to use Kconfig
 - replaced old boot mem functions by memblock_*
 - enabled COP2 usage in kernel for Loongson64 to make usage
   of usage of 16byte load/stores possible
 - cleanups and fixes
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Merge tag 'mips_5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS updates from Thomas Bogendoerfer:

 - removed support for PNX833x alias NXT_STB22x

 - included Ingenic SoC support into generic MIPS kernels

 - added support for new Ingenic SoCs

 - converted workaround selection to use Kconfig

 - replaced old boot mem functions by memblock_*

 - enabled COP2 usage in kernel for Loongson64 to make use
   of 16byte load/stores possible

 - cleanups and fixes

* tag 'mips_5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (92 commits)
  MIPS: DEC: Restore bootmem reservation for firmware working memory area
  MIPS: dec: fix section mismatch
  bcm963xx_tag.h: fix duplicated word
  mips: ralink: enable zboot support
  MIPS: ingenic: Remove CPU_SUPPORTS_HUGEPAGES
  MIPS: cpu-probe: remove MIPS_CPU_BP_GHIST option bit
  MIPS: cpu-probe: introduce exclusive R3k CPU probe
  MIPS: cpu-probe: move fpu probing/handling into its own file
  MIPS: replace add_memory_region with memblock
  MIPS: Loongson64: Clean up numa.c
  MIPS: Loongson64: Select SMP in Kconfig to avoid build error
  mips: octeon: Add Ubiquiti E200 and E220 boards
  MIPS: SGI-IP28: disable use of ll/sc in kernel
  MIPS: tx49xx: move tx4939_add_memory_regions into only user
  MIPS: pgtable: Remove used PAGE_USERIO define
  MIPS: alchemy: Share prom_init implementation
  MIPS: alchemy: Fix build breakage, if TOUCHSCREEN_WM97XX is disabled
  MIPS: process: include exec.h header in process.c
  MIPS: process: Add prototype for function arch_dup_task_struct
  MIPS: idle: Add prototype for function check_wait
  ...
2020-10-16 12:40:55 -07:00
Linus Torvalds
7286d2a37e Merge branch 'parisc-5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:

 - Added fw_cfg support for parisc on qemu

 - Added font support in sti text console driver for byte- and word-mode
   ROMs

 - Switch to more fine grained lws locks and improve spinlock handling

 - Add ioread64_hi_lo() and iowrite64_hi_lo() to avoid 0-day linking
   errors

 - Mark pointers volatile in __xchg8(), __xchg32() and __xchg64() to
   help compiler

 - Header file cleanups, mostly removal of unused HP-UX compat defines

 - Drop one bit from our O_NONBLOCK define to become now 000200000

 - Add MAP_UNINITIALIZED define to avoid userspace compile errors

 - Drop CONFIG_IDE from defconfigs

 - Speed up synchronize_caches() on UP machines

 - Rewrite tlb flush threshold calculation

 - Comment fixes and cleanups

* 'parisc-5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc/sticon: Add user font support
  parisc/sticon: Always register sticon console driver
  parisc: Add MAP_UNINITIALIZED define
  parisc: Improve spinlock handling
  parisc: Install vmlinuz instead of zImage file
  parisc: Rewrite tlb flush threshold calculation
  parisc: Switch to more fine grained lws locks
  parisc: Mark pointers volatile in __xchg8(), __xchg32() and __xchg64()
  parisc: Fix comments and enable interrupts later
  parisc: Add alternative patching to synchronize_caches define
  parisc: Add ioread64_hi_lo() and iowrite64_hi_lo()
  parisc: disable CONFIG_IDE in defconfigs
  parisc: Drop useless comments in uapi/asm/signal.h
  parisc: Define O_NONBLOCK to become 000200000
  parisc: Drop HP-UX specific fcntl and signal flags
  parisc: Avoid external interrupts when IPI finishes
  parisc: Add qemu fw_cfg interface
  fw_cfg: Add support for parisc architecture
2020-10-15 15:42:55 -07:00
Linus Torvalds
c6dbef7307 USB/PHY/Thunderbolt driver patches for 5.10-rc1
Here is the big set of USB, PHY, and Thunderbolt driver updates for
 5.10-rc1.
 
 Lots of tiny different things for these subsystems are in here,
 including:
 	- phy driver updates
 	- thunderbolt / USB 4 updates and additions
 	- USB gadget driver updates
 	- xhci fixes and updates
 	- typec driver additions and updates
 	- api conversions to various drivers for core kernel api changes
 	- new USB control message functions to make it harder to get
 	  wrong, as found by syzbot (took 2 tries to get it right)
 	- lots of tiny USB driver fixes and updates all over the place
 
 All of these have been in linux-next for a while, with the exception of
 the last "obviously correct" patch that updated a FALLTHROUGH comment
 that got merged last weekend.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB/PHY/Thunderbolt driver updates from Greg KH:
 "Here is the big set of USB, PHY, and Thunderbolt driver updates for
  5.10-rc1.

  Lots of tiny different things for these subsystems are in here,
  including:

   - phy driver updates

   - thunderbolt / USB 4 updates and additions

   - USB gadget driver updates

   - xhci fixes and updates

   - typec driver additions and updates

   - api conversions to various drivers for core kernel api changes

   - new USB control message functions to make it harder to get wrong,
     as found by syzbot (took 2 tries to get it right)

   - lots of tiny USB driver fixes and updates all over the place

  All of these have been in linux-next for a while, with the exception
  of the last "obviously correct" patch that updated a FALLTHROUGH
  comment that got merged last weekend"

* tag 'usb-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (374 commits)
  usb: musb: gadget: Use fallthrough pseudo-keyword
  usb: typec: Add QCOM PMIC typec detection driver
  USB: serial: option: add Cellient MPL200 card
  usb: typec: tcpci_maxim: Add support for Sink FRS
  usb: typec: tcpci: Implement callbacks for FRS
  usb: typec: tcpm: Add support for Sink Fast Role SWAP(FRS)
  usb: typec: tcpci_maxim: Chip level TCPC driver
  usb: typec: tcpci: Add set_vbus tcpci callback
  usb: typec: tcpci: Add a getter method to retrieve tcpm_port reference
  usbip: vhci_hcd: fix calling usb_hcd_giveback_urb() with irqs enabled
  usb: cdc-acm: add quirk to blacklist ETAS ES58X devices
  USB: serial: ftdi_sio: use cur_altsetting for consistency
  USB: serial: option: Add Telit FT980-KS composition
  USB: core: remove polling for /sys/kernel/debug/usb/devices
  usb: typec: add support for STUSB160x Type-C controller family
  usb: typec: add typec_find_pwr_opmode
  usb: typec: hd3ss3220: Use OF graph API to get the connector fwnode
  dt-bindings: usb: renesas,usb3-peri: Document HS and SS data bus
  dt-bindings: usb: convert ti,hd3ss3220 bindings to json-schema
  usb: dwc2: Fix INTR OUT transfers in DDMA mode.
  ...
2020-10-15 09:51:18 -07:00
Helge Deller
6b698713d4 fw_cfg: Add support for parisc architecture
Signed-off-by: Helge Deller <deller@gmx.de>
2020-10-15 08:10:37 +02:00
Linus Torvalds
0b8417c141 Power management updates for 5.10-rc1
- Rework cpufreq statistics collection to allow it to take place
    when fast frequency switching is enabled in the governor (Viresh
    Kumar).
 
  - Make the cpufreq core set the frequency scale on behalf of the
    driver and update several cpufreq drivers accordingly (Ionela
    Voinescu, Valentin Schneider).
 
  - Add new hardware support to the STI and qcom cpufreq drivers and
    improve them (Alain Volmat, Manivannan Sadhasivam).
 
  - Fix multiple assorted issues in cpufreq drivers (Jon Hunter,
    Krzysztof Kozlowski, Matthias Kaehlcke, Pali Rohár, Stephan
    Gerhold, Viresh Kumar).
 
  - Fix several assorted issues in the operating performance points
    (OPP) framework (Stephan Gerhold, Viresh Kumar).
 
  - Allow devfreq drivers to fetch devfreq instances by DT enumeration
    instead of using explicit phandles and modify the devfreq core
    code to support driver-specific devfreq DT bindings (Leonard
    Crestez, Chanwoo Choi).
 
  - Improve initial hardware resetting in the tegra30 devfreq driver
    and clean up the tegra cpuidle driver (Dmitry Osipenko).
 
  - Update the cpuidle core to collect state entry rejection
    statistics and expose them via sysfs (Lina Iyer).
 
  - Improve the ACPI _CST code handling diagnostics (Chen Yu).
 
  - Update the PSCI cpuidle driver to allow the PM domain
    initialization to occur in the OSI mode as well as in the PC
    mode (Ulf Hansson).
 
  - Rework the generic power domains (genpd) core code to allow
    domain power off transition to be aborted in the absence of the
    "power off" domain callback (Ulf Hansson).
 
  - Fix two suspend-to-idle issues in the ACPI EC driver (Rafael
    Wysocki).
 
  - Fix the handling of timer_expires in the PM-runtime framework on
    32-bit systems and the handling of device links in it (Grygorii
    Strashko, Xiang Chen).
 
  - Add IO requests batching support to the hibernate image saving and
    reading code and drop a bogus get_gendisk() from there (Xiaoyi
    Chen, Christoph Hellwig).
 
  - Allow PCIe ports to be put into the D3cold power state if they
    are power-manageable via ACPI (Lukas Wunner).
 
  - Add missing header file include to a power capping driver (Pujin
    Shi).
 
  - Clean up the qcom-cpr AVS driver a bit (Liu Shixin).
 
  - Kevin Hilman steps down as designated reviwer of adaptive voltage
    scaling (AVS) driverrs (Kevin Hilman).
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Merge tag 'pm-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management updates from Rafael Wysocki:
 "These rework the collection of cpufreq statistics to allow it to take
  place if fast frequency switching is enabled in the governor, rework
  the frequency invariance handling in the cpufreq core and drivers, add
  new hardware support to a couple of cpufreq drivers, fix a number of
  assorted issues and clean up the code all over.

  Specifics:

   - Rework cpufreq statistics collection to allow it to take place when
     fast frequency switching is enabled in the governor (Viresh Kumar).

   - Make the cpufreq core set the frequency scale on behalf of the
     driver and update several cpufreq drivers accordingly (Ionela
     Voinescu, Valentin Schneider).

   - Add new hardware support to the STI and qcom cpufreq drivers and
     improve them (Alain Volmat, Manivannan Sadhasivam).

   - Fix multiple assorted issues in cpufreq drivers (Jon Hunter,
     Krzysztof Kozlowski, Matthias Kaehlcke, Pali Rohár, Stephan
     Gerhold, Viresh Kumar).

   - Fix several assorted issues in the operating performance points
     (OPP) framework (Stephan Gerhold, Viresh Kumar).

   - Allow devfreq drivers to fetch devfreq instances by DT enumeration
     instead of using explicit phandles and modify the devfreq core code
     to support driver-specific devfreq DT bindings (Leonard Crestez,
     Chanwoo Choi).

   - Improve initial hardware resetting in the tegra30 devfreq driver
     and clean up the tegra cpuidle driver (Dmitry Osipenko).

   - Update the cpuidle core to collect state entry rejection statistics
     and expose them via sysfs (Lina Iyer).

   - Improve the ACPI _CST code handling diagnostics (Chen Yu).

   - Update the PSCI cpuidle driver to allow the PM domain
     initialization to occur in the OSI mode as well as in the PC mode
     (Ulf Hansson).

   - Rework the generic power domains (genpd) core code to allow domain
     power off transition to be aborted in the absence of the "power
     off" domain callback (Ulf Hansson).

   - Fix two suspend-to-idle issues in the ACPI EC driver (Rafael
     Wysocki).

   - Fix the handling of timer_expires in the PM-runtime framework on
     32-bit systems and the handling of device links in it (Grygorii
     Strashko, Xiang Chen).

   - Add IO requests batching support to the hibernate image saving and
     reading code and drop a bogus get_gendisk() from there (Xiaoyi
     Chen, Christoph Hellwig).

   - Allow PCIe ports to be put into the D3cold power state if they are
     power-manageable via ACPI (Lukas Wunner).

   - Add missing header file include to a power capping driver (Pujin
     Shi).

   - Clean up the qcom-cpr AVS driver a bit (Liu Shixin).

   - Kevin Hilman steps down as designated reviwer of adaptive voltage
     scaling (AVS) drivers (Kevin Hilman)"

* tag 'pm-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (65 commits)
  cpufreq: stats: Fix string format specifier mismatch
  arm: disable frequency invariance for CONFIG_BL_SWITCHER
  cpufreq,arm,arm64: restructure definitions of arch_set_freq_scale()
  cpufreq: stats: Add memory barrier to store_reset()
  cpufreq: schedutil: Simplify sugov_fast_switch()
  ACPI: EC: PM: Drop ec_no_wakeup check from acpi_ec_dispatch_gpe()
  ACPI: EC: PM: Flush EC work unconditionally after wakeup
  PCI/ACPI: Whitelist hotplug ports for D3 if power managed by ACPI
  PM: hibernate: remove the bogus call to get_gendisk() in software_resume()
  cpufreq: Move traces and update to policy->cur to cpufreq core
  cpufreq: stats: Enable stats for fast-switch as well
  cpufreq: stats: Mark few conditionals with unlikely()
  cpufreq: stats: Remove locking
  cpufreq: stats: Defer stats update to cpufreq_stats_record_transition()
  PM: domains: Allow to abort power off when no ->power_off() callback
  PM: domains: Rename power state enums for genpd
  PM / devfreq: tegra30: Improve initial hardware resetting
  PM / devfreq: event: Change prototype of devfreq_event_get_edev_by_phandle function
  PM / devfreq: Change prototype of devfreq_get_devfreq_by_phandle function
  PM / devfreq: Add devfreq_get_devfreq_by_node function
  ...
2020-10-14 10:45:41 -07:00
Florian Fainelli
b9ceca6be4 firmware: arm_scmi: Fix duplicate workqueue name
When more than a single SCMI device are present in the system, the
creation of the notification workqueue with the WQ_SYSFS flag will lead
to the following sysfs duplicate node warning:

 sysfs: cannot create duplicate filename '/devices/virtual/workqueue/scmi_notify'
 CPU: 0 PID: 20 Comm: kworker/0:1 Not tainted 5.9.0-gdf4dd84a3f7d #29
 Hardware name: Broadcom STB (Flattened Device Tree)
 Workqueue: events deferred_probe_work_func
 Backtrace:
   show_stack + 0x20/0x24
   dump_stack + 0xbc/0xe0
   sysfs_warn_dup + 0x70/0x80
   sysfs_create_dir_ns + 0x15c/0x1a4
   kobject_add_internal + 0x140/0x4d0
   kobject_add + 0xc8/0x138
   device_add + 0x1dc/0xc20
   device_register + 0x24/0x28
   workqueue_sysfs_register + 0xe4/0x1f0
   alloc_workqueue + 0x448/0x6ac
   scmi_notification_init + 0x78/0x1dc
   scmi_probe + 0x268/0x4fc
   platform_drv_probe + 0x70/0xc8
   really_probe + 0x184/0x728
   driver_probe_device + 0xa4/0x278
   __device_attach_driver + 0xe8/0x148
   bus_for_each_drv + 0x108/0x158
   __device_attach + 0x190/0x234
   device_initial_probe + 0x1c/0x20
   bus_probe_device + 0xdc/0xec
   deferred_probe_work_func + 0xd4/0x11c
   process_one_work + 0x420/0x8f0
   worker_thread + 0x4fc/0x91c
   kthread + 0x21c/0x22c
   ret_from_fork + 0x14/0x20
 kobject_add_internal failed for scmi_notify with -EEXIST, don't try to
 	register things with the same name in the same directory.
 arm-scmi brcm_scmi@1: SCMI Notifications - Initialization Failed.
 arm-scmi brcm_scmi@1: SCMI Notifications NOT available.
 arm-scmi brcm_scmi@1: SCMI Protocol v1.0 'brcm-scmi:' Firmware version 0x1

Fix this by using dev_name(handle->dev) which guarantees that the name is
unique and this also helps correlate which notification workqueue corresponds
to which SCMI device instance.

Link: https://lore.kernel.org/r/20201014021737.287340-1-f.fainelli@gmail.com
Fixes: bd31b24969 ("firmware: arm_scmi: Add notification dispatch and delivery")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
[sudeep.holla: trimmed backtrace to remove all unwanted hexcodes and timestamps]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2020-10-14 18:42:41 +01:00
Cristian Marussi
c7821c2d9c firmware: arm_scmi: Fix locking in notifications
When a protocol registers its events, the notification core takes care
to rescan the hashtable of pending event handlers and activate all the
possibly existent handlers referring to any of the events that are just
registered by the new protocol. When a pending handler becomes active
the core requests and enables the corresponding events in the SCMI
firmware.

If, for whatever reason, the enable fails, such invalid event handler
must be finally removed and freed. Let us ensure to use the
scmi_put_active_handler() helper which handles properly the needed
additional locking.

Failing to properly acquire all the needed mutexes exposes a race that
leads to the following splat being observed:

 WARNING: CPU: 0 PID: 388 at lib/refcount.c:28 refcount_warn_saturate+0xf8/0x148
 Hardware name: ARM LTD ARM Juno Development Platform/ARM Juno Development
 	Platform, BIOS EDK II Jun 30 2020
 pstate: 40000005 (nZcv daif -PAN -UAO BTYPE=--)
 pc : refcount_warn_saturate+0xf8/0x148
 lr : refcount_warn_saturate+0xf8/0x148
 Call trace:
  refcount_warn_saturate+0xf8/0x148
  scmi_put_handler_unlocked.isra.10+0x204/0x208
  scmi_put_handler+0x50/0xa0
  scmi_unregister_notifier+0x1bc/0x240
  scmi_notify_tester_remove+0x4c/0x68 [dummy_scmi_consumer]
  scmi_dev_remove+0x54/0x68
  device_release_driver_internal+0x114/0x1e8
  driver_detach+0x58/0xe8
  bus_remove_driver+0x88/0xe0
  driver_unregister+0x38/0x68
  scmi_driver_unregister+0x1c/0x28
  scmi_drv_exit+0x1c/0xae0 [dummy_scmi_consumer]
  __arm64_sys_delete_module+0x1a4/0x268
  el0_svc_common.constprop.3+0x94/0x178
  do_el0_svc+0x2c/0x98
  el0_sync_handler+0x148/0x1a8
  el0_sync+0x158/0x180

Link: https://lore.kernel.org/r/20201013133109.49821-1-cristian.marussi@arm.com
Fixes: e7c215f358 ("firmware: arm_scmi: Add notification callbacks-registration")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2020-10-14 18:42:41 +01:00
Dan Williams
88e9a5b796 efi/fake_mem: arrange for a resource entry per efi_fake_mem instance
In preparation for attaching a platform device per iomem resource teach
the efi_fake_mem code to create an e820 entry per instance.  Similar to
E820_TYPE_PRAM, bypass merging resource when the e820 map is sanitized.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Brice Goglin <Brice.Goglin@inria.fr>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: David Airlie <airlied@linux.ie>
Cc: David Hildenbrand <david@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Jeff Moyer <jmoyer@redhat.com>
Cc: Jia He <justin.he@arm.com>
Cc: Joao Martins <joao.m.martins@oracle.com>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Wei Yang <richard.weiyang@linux.alibaba.com>
Cc: Will Deacon <will@kernel.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Hulk Robot <hulkci@huawei.com>
Cc: Jason Yan <yanaijie@huawei.com>
Cc: "Jérôme Glisse" <jglisse@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: kernel test robot <lkp@intel.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Vivek Goyal <vgoyal@redhat.com>
Link: https://lkml.kernel.org/r/159643096068.4062302.11590041070221681669.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-10-13 18:38:27 -07:00
Linus Torvalds
fd5c32d808 media updates for v5.10-rc1
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Merge tag 'media/v5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - the usbvision driver was dropped from staging

 - the Zoran driver were re-added at staging. It gained lots of
   improvements, and was converted to use videobuf2 API

 - a new virtual driver (vidtv) was added in order to allow testing the
   digital TV framework and APIs

 - the media uAPI documentation gained a glossary with commonly used
   terms, helping to simplify some parts of the docs

 - more cleanups at the atomisp driver

 - Mediatek VPU gained support for MT8183

 - added support for codecs with supports doing colorspace conversion
   (CSC)

 - support for CSC API was added at vivid and rksip1 drivers

 - added a helper core support and uAPI for better supporting H.264
   codecs

 - added support for Renesas R8A774E1

 - use the new SPDX GFDL-1.1-no-invariants-or-later license on media
   uAPI docs, instead of a license text

 - Venus driver has gained VP9 codec support

 - lots of other cleanups and driver improvements

* tag 'media/v5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (555 commits)
  media: dvb-frontends/drxk_hard.c: fix uninitialized variable warning
  media: tvp7002: fix uninitialized variable warning
  media: s5k5baf: drop 'data' field in struct s5k5baf_fw
  media: dt-bindings: media: venus: Add an optional power domain for perf voting
  media: rcar-vin: rcar-dma: Fix setting VNIS_REG for RAW8 formats
  media: staging: rkisp1: uapi: Do not use BIT() macro
  media: v4l2-mem2mem: Fix spurious v4l2_m2m_buf_done
  media: usbtv: Fix refcounting mixup
  media: zoran.rst: place it at the right place this time
  media: add Zoran cardlist
  media: admin-guide: update cardlists
  media: siano: rename a duplicated card string
  media: zoran: move documentation file to the right place
  media: atomisp: fixes build breakage for ISP2400 due to a cleanup
  media: zoran: fix mixed case on vars
  media: zoran: get rid of an unused var
  media: zoran: use upper case for card types
  media: zoran: fix sparse warnings
  media: zoran: fix smatch warning
  media: zoran: update TODO
  ...
2020-10-13 09:37:02 -07:00
Sudeep Holla
9724722fde firmware: arm_scmi: Add missing Rx size re-initialisation
Few commands provide the list of description partially and require
to be called consecutively until all the descriptors are fetched
completely. In such cases, we don't release the buffers and reuse
them for consecutive transmits.

However, currently we don't reset the Rx size which will be set as
per the response for the last transmit. This may result in incorrect
response size being interpretted as the firmware may repond with size
greater than the one set but we read only upto the size set by previous
response.

Let us reset the receive buffer size to max possible in such cases as
we don't know the exact size of the response.

Link:  https://lore.kernel.org/r/20201012141746.32575-1-sudeep.holla@arm.com
Fixes: b6f20ff8bd ("firmware: arm_scmi: add common infrastructure and support for base protocol")
Reported-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2020-10-13 10:01:47 +01:00
Linus Torvalds
34eb62d868 Orphan link sections were a long-standing source of obscure bugs,
because the heuristics that various linkers & compilers use to handle them
 (include these bits into the output image vs discarding them silently)
 are both highly idiosyncratic and also version dependent.
 
 Instead of this historically problematic mess, this tree by Kees Cook (et al)
 adds build time asserts and build time warnings if there's any orphan section
 in the kernel or if a section is not sized as expected.
 
 And because we relied on so many silent assumptions in this area, fix a metric
 ton of dependencies and some outright bugs related to this, before we can
 finally enable the checks on the x86, ARM and ARM64 platforms.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'core-build-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull orphan section checking from Ingo Molnar:
 "Orphan link sections were a long-standing source of obscure bugs,
  because the heuristics that various linkers & compilers use to handle
  them (include these bits into the output image vs discarding them
  silently) are both highly idiosyncratic and also version dependent.

  Instead of this historically problematic mess, this tree by Kees Cook
  (et al) adds build time asserts and build time warnings if there's any
  orphan section in the kernel or if a section is not sized as expected.

  And because we relied on so many silent assumptions in this area, fix
  a metric ton of dependencies and some outright bugs related to this,
  before we can finally enable the checks on the x86, ARM and ARM64
  platforms"

* tag 'core-build-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits)
  x86/boot/compressed: Warn on orphan section placement
  x86/build: Warn on orphan section placement
  arm/boot: Warn on orphan section placement
  arm/build: Warn on orphan section placement
  arm64/build: Warn on orphan section placement
  x86/boot/compressed: Add missing debugging sections to output
  x86/boot/compressed: Remove, discard, or assert for unwanted sections
  x86/boot/compressed: Reorganize zero-size section asserts
  x86/build: Add asserts for unwanted sections
  x86/build: Enforce an empty .got.plt section
  x86/asm: Avoid generating unused kprobe sections
  arm/boot: Handle all sections explicitly
  arm/build: Assert for unwanted sections
  arm/build: Add missing sections
  arm/build: Explicitly keep .ARM.attributes sections
  arm/build: Refactor linker script headers
  arm64/build: Assert for unwanted sections
  arm64/build: Add missing DWARF sections
  arm64/build: Use common DISCARDS in linker script
  arm64/build: Remove .eh_frame* sections due to unwind tables
  ...
2020-10-12 13:39:19 -07:00
Linus Torvalds
e6412f9833 EFI changes for v5.10:
- Preliminary RISC-V enablement - the bulk of it will arrive via the RISCV tree.
 
  - Relax decompressed image placement rules for 32-bit ARM
 
  - Add support for passing MOK certificate table contents via a config table
    rather than a EFI variable.
 
  - Add support for 18 bit DIMM row IDs in the CPER records.
 
  - Work around broken Dell firmware that passes the entire Boot#### variable
    contents as the command line
 
  - Add definition of the EFI_MEMORY_CPU_CRYPTO memory attribute so we can
    identify it in the memory map listings.
 
  - Don't abort the boot on arm64 if the EFI RNG protocol is available but
    returns with an error
 
  - Replace slashes with exclamation marks in efivarfs file names
 
  - Split efi-pstore from the deprecated efivars sysfs code, so we can
    disable the latter on !x86.
 
  - Misc fixes, cleanups and updates.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'efi-core-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull EFI changes from Ingo Molnar:

 - Preliminary RISC-V enablement - the bulk of it will arrive via the
   RISCV tree.

 - Relax decompressed image placement rules for 32-bit ARM

 - Add support for passing MOK certificate table contents via a config
   table rather than a EFI variable.

 - Add support for 18 bit DIMM row IDs in the CPER records.

 - Work around broken Dell firmware that passes the entire Boot####
   variable contents as the command line

 - Add definition of the EFI_MEMORY_CPU_CRYPTO memory attribute so we
   can identify it in the memory map listings.

 - Don't abort the boot on arm64 if the EFI RNG protocol is available
   but returns with an error

 - Replace slashes with exclamation marks in efivarfs file names

 - Split efi-pstore from the deprecated efivars sysfs code, so we can
   disable the latter on !x86.

 - Misc fixes, cleanups and updates.

* tag 'efi-core-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits)
  efi: mokvar: add missing include of asm/early_ioremap.h
  efi: efivars: limit availability to X86 builds
  efi: remove some false dependencies on CONFIG_EFI_VARS
  efi: gsmi: fix false dependency on CONFIG_EFI_VARS
  efi: efivars: un-export efivars_sysfs_init()
  efi: pstore: move workqueue handling out of efivars
  efi: pstore: disentangle from deprecated efivars module
  efi: mokvar-table: fix some issues in new code
  efi/arm64: libstub: Deal gracefully with EFI_RNG_PROTOCOL failure
  efivarfs: Replace invalid slashes with exclamation marks in dentries.
  efi: Delete deprecated parameter comments
  efi/libstub: Fix missing-prototypes in string.c
  efi: Add definition of EFI_MEMORY_CPU_CRYPTO and ability to report it
  cper,edac,efi: Memory Error Record: bank group/address and chip id
  edac,ghes,cper: Add Row Extension to Memory Error Record
  efi/x86: Add a quirk to support command line arguments on Dell EFI firmware
  efi/libstub: Add efi_warn and *_once logging helpers
  integrity: Load certs from the EFI MOK config table
  integrity: Move import of MokListRT certs to a separate routine
  efi: Support for MOK variable config table
  ...
2020-10-12 13:26:49 -07:00
Linus Torvalds
6734e20e39 arm64 updates for 5.10
- Userspace support for the Memory Tagging Extension introduced by Armv8.5.
   Kernel support (via KASAN) is likely to follow in 5.11.
 
 - Selftests for MTE, Pointer Authentication and FPSIMD/SVE context
   switching.
 
 - Fix and subsequent rewrite of our Spectre mitigations, including the
   addition of support for PR_SPEC_DISABLE_NOEXEC.
 
 - Support for the Armv8.3 Pointer Authentication enhancements.
 
 - Support for ASID pinning, which is required when sharing page-tables with
   the SMMU.
 
 - MM updates, including treating flush_tlb_fix_spurious_fault() as a no-op.
 
 - Perf/PMU driver updates, including addition of the ARM CMN PMU driver and
   also support to handle CPU PMU IRQs as NMIs.
 
 - Allow prefetchable PCI BARs to be exposed to userspace using normal
   non-cacheable mappings.
 
 - Implementation of ARCH_STACKWALK for unwinding.
 
 - Improve reporting of unexpected kernel traps due to BPF JIT failure.
 
 - Improve robustness of user-visible HWCAP strings and their corresponding
   numerical constants.
 
 - Removal of TEXT_OFFSET.
 
 - Removal of some unused functions, parameters and prototypes.
 
 - Removal of MPIDR-based topology detection in favour of firmware
   description.
 
 - Cleanups to handling of SVE and FPSIMD register state in preparation
   for potential future optimisation of handling across syscalls.
 
 - Cleanups to the SDEI driver in preparation for support in KVM.
 
 - Miscellaneous cleanups and refactoring work.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 updates from Will Deacon:
 "There's quite a lot of code here, but much of it is due to the
  addition of a new PMU driver as well as some arm64-specific selftests
  which is an area where we've traditionally been lagging a bit.

  In terms of exciting features, this includes support for the Memory
  Tagging Extension which narrowly missed 5.9, hopefully allowing
  userspace to run with use-after-free detection in production on CPUs
  that support it. Work is ongoing to integrate the feature with KASAN
  for 5.11.

  Another change that I'm excited about (assuming they get the hardware
  right) is preparing the ASID allocator for sharing the CPU page-table
  with the SMMU. Those changes will also come in via Joerg with the
  IOMMU pull.

  We do stray outside of our usual directories in a few places, mostly
  due to core changes required by MTE. Although much of this has been
  Acked, there were a couple of places where we unfortunately didn't get
  any review feedback.

  Other than that, we ran into a handful of minor conflicts in -next,
  but nothing that should post any issues.

  Summary:

   - Userspace support for the Memory Tagging Extension introduced by
     Armv8.5. Kernel support (via KASAN) is likely to follow in 5.11.

   - Selftests for MTE, Pointer Authentication and FPSIMD/SVE context
     switching.

   - Fix and subsequent rewrite of our Spectre mitigations, including
     the addition of support for PR_SPEC_DISABLE_NOEXEC.

   - Support for the Armv8.3 Pointer Authentication enhancements.

   - Support for ASID pinning, which is required when sharing
     page-tables with the SMMU.

   - MM updates, including treating flush_tlb_fix_spurious_fault() as a
     no-op.

   - Perf/PMU driver updates, including addition of the ARM CMN PMU
     driver and also support to handle CPU PMU IRQs as NMIs.

   - Allow prefetchable PCI BARs to be exposed to userspace using normal
     non-cacheable mappings.

   - Implementation of ARCH_STACKWALK for unwinding.

   - Improve reporting of unexpected kernel traps due to BPF JIT
     failure.

   - Improve robustness of user-visible HWCAP strings and their
     corresponding numerical constants.

   - Removal of TEXT_OFFSET.

   - Removal of some unused functions, parameters and prototypes.

   - Removal of MPIDR-based topology detection in favour of firmware
     description.

   - Cleanups to handling of SVE and FPSIMD register state in
     preparation for potential future optimisation of handling across
     syscalls.

   - Cleanups to the SDEI driver in preparation for support in KVM.

   - Miscellaneous cleanups and refactoring work"

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (148 commits)
  Revert "arm64: initialize per-cpu offsets earlier"
  arm64: random: Remove no longer needed prototypes
  arm64: initialize per-cpu offsets earlier
  kselftest/arm64: Check mte tagged user address in kernel
  kselftest/arm64: Verify KSM page merge for MTE pages
  kselftest/arm64: Verify all different mmap MTE options
  kselftest/arm64: Check forked child mte memory accessibility
  kselftest/arm64: Verify mte tag inclusion via prctl
  kselftest/arm64: Add utilities and a test to validate mte memory
  perf: arm-cmn: Fix conversion specifiers for node type
  perf: arm-cmn: Fix unsigned comparison to less than zero
  arm64: dbm: Invalidate local TLB when setting TCR_EL1.HD
  arm64: mm: Make flush_tlb_fix_spurious_fault() a no-op
  arm64: Add support for PR_SPEC_DISABLE_NOEXEC prctl() option
  arm64: Pull in task_stack_page() to Spectre-v4 mitigation code
  KVM: arm64: Allow patching EL2 vectors even with KASLR is not enabled
  arm64: Get rid of arm64_ssbd_state
  KVM: arm64: Convert ARCH_WORKAROUND_2 to arm64_get_spectre_v4_state()
  KVM: arm64: Get rid of kvm_arm_have_ssbd()
  KVM: arm64: Simplify handling of ARCH_WORKAROUND_2
  ...
2020-10-12 10:00:51 -07:00
Etienne Carriere
7adb2c8aaa firmware: arm_scmi: Expand SMC/HVC message pool to more than one
SMC/HVC can transmit only one message at the time as the shared memory
needs to be protected and the calls are synchronous.

However, in order to allow multiple threads to send SCMI messages
simultaneously, we need a larger poll of memory.

Let us just use value of 20 to keep it in sync mailbox transport
implementation. Any other value must work perfectly.

Link: https://lore.kernel.org/r/20201008143722.21888-4-etienne.carriere@linaro.org
Fixes: 1dc6558062 ("firmware: arm_scmi: Add smc/hvc transport")
Cc: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
[sudeep.holla: reworded the commit message to indicate the practicality]
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2020-10-12 15:10:42 +01:00
Etienne Carriere
45b9e04d5b firmware: arm_scmi: Fix ARCH_COLD_RESET
The defination for ARCH_COLD_RESET is wrong. Let us fix it according to
the SCMI specification.

Link: https://lore.kernel.org/r/20201008143722.21888-5-etienne.carriere@linaro.org
Fixes: 95a15d80aa ("firmware: arm_scmi: Add RESET protocol in SCMI v2.0")
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2020-10-12 14:05:12 +01:00
Ingo Molnar
4d0a4388cc Merge branch 'efi/urgent' into efi/core, to pick up fixes
These fixes missed the v5.9 merge window, pick them up for early v5.10 merge.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2020-10-12 13:38:31 +02:00
Mauro Carvalho Chehab
463c43fcd9 Linux 5.9-rc7
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Merge tag 'v5.9-rc7' into patchwork

Linux 5.9-rc7

* tag 'v5.9-rc7': (683 commits)
  Linux 5.9-rc7
  mm/thp: Split huge pmds/puds if they're pinned when fork()
  mm: Do early cow for pinned pages during fork() for ptes
  mm/fork: Pass new vma pointer into copy_page_range()
  mm: Introduce mm_struct.has_pinned
  mm: validate pmd after splitting
  mm: don't rely on system state to detect hot-plug operations
  mm: replace memmap_context by meminit_context
  arch/x86/lib/usercopy_64.c: fix __copy_user_flushcache() cache writeback
  lib/memregion.c: include memregion.h
  lib/string.c: implement stpcpy
  mm/migrate: correct thp migration stats
  mm/gup: fix gup_fast with dynamic page table folding
  mm: memcontrol: fix missing suffix of workingset_restore
  mm, THP, swap: fix allocating cluster for swapfile by mistake
  mm: slab: fix potential double free in ___cache_free
  Documentation/llvm: Fix clang target examples
  io_uring: ensure async buffered read-retry is setup properly
  KVM: SVM: Add a dedicated INVD intercept routine
  io_uring: don't unconditionally set plug->nowait = true
  ...
2020-10-04 12:19:12 +02:00
Olof Johansson
a39c258cc4 i.MX drivers update for 5.10:
- Use dev_err_probe() to simplify error handling for i.MX GPCv2 driver.
 - Add a check in i.MX SCU power domain driver to ignore the power
   domains that are not owned by the current partition.
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Merge tag 'imx-drivers-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/drivers

i.MX drivers update for 5.10:

- Use dev_err_probe() to simplify error handling for i.MX GPCv2 driver.
- Add a check in i.MX SCU power domain driver to ignore the power
  domains that are not owned by the current partition.

* tag 'imx-drivers-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  firmware: imx: scu-pd: ignore power domain not owned
  soc: imx: gpcv2: Use dev_err_probe() to simplify error handling

Link: https://lore.kernel.org/r/20200923073009.23678-1-shawnguo@kernel.org
Signed-off-by: Olof Johansson <olof@lixom.net>
2020-10-03 12:58:32 -07:00
Atish Patra
b91540d52a
RISC-V: Add EFI runtime services
This patch adds EFI runtime service support for RISC-V.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
[ardb: - Remove the page check]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2020-10-02 14:31:28 -07:00
Atish Patra
d7071743db
RISC-V: Add EFI stub support.
Add a RISC-V architecture specific stub code that actually copies the
actual kernel image to a valid address and jump to it after boot services
are terminated. Enable UEFI related kernel configs as well for RISC-V.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Link: https://lore.kernel.org/r/20200421033336.9663-4-atish.patra@wdc.com
[ardb: - move hartid fetch into check_platform_features()
       - use image_size not reserve_size
       - select ISA_C
       - do not use dram_base]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2020-10-02 14:31:21 -07:00
Palmer Dabbelt
8a3f30c431 Stable branch for v5.10 shared between the EFI and RISC-V trees
The RISC-V EFI boot and runtime support will be merged for v5.10 via
 the RISC-V tree. However, it incorporates some changes that conflict
 with other EFI changes that are in flight, so this tag serves as a
 shared base that allows those conflicts to be resolved beforehand.
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Merge tag 'efi-riscv-shared-for-v5.10' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/efi/efi into for-next

Stable branch for v5.10 shared between the EFI and RISC-V trees

The RISC-V EFI boot and runtime support will be merged for v5.10 via
the RISC-V tree. However, it incorporates some changes that conflict
with other EFI changes that are in flight, so this tag serves as a
shared base that allows those conflicts to be resolved beforehand.

* tag 'efi-riscv-shared-for-v5.10' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  efi/libstub: arm32: Use low allocation for the uncompressed kernel
  efi/libstub: Export efi_low_alloc_above() to other units
  efi/libstub: arm32: Base FDT and initrd placement on image address
  efi: Rename arm-init to efi-init common for all arch
  include: pe.h: Add RISC-V related PE definition
2020-10-02 14:29:51 -07:00
Will Deacon
57b8b1b435 Merge branches 'for-next/acpi', 'for-next/boot', 'for-next/bpf', 'for-next/cpuinfo', 'for-next/fpsimd', 'for-next/misc', 'for-next/mm', 'for-next/pci', 'for-next/perf', 'for-next/ptrauth', 'for-next/sdei', 'for-next/selftests', 'for-next/stacktrace', 'for-next/svm', 'for-next/topology', 'for-next/tpyos' and 'for-next/vdso' into for-next/core
Remove unused functions and parameters from ACPI IORT code.
(Zenghui Yu via Lorenzo Pieralisi)
* for-next/acpi:
  ACPI/IORT: Remove the unused inline functions
  ACPI/IORT: Drop the unused @ops of iort_add_device_replay()

Remove redundant code and fix documentation of caching behaviour for the
HVC_SOFT_RESTART hypercall.
(Pingfan Liu)
* for-next/boot:
  Documentation/kvm/arm: improve description of HVC_SOFT_RESTART
  arm64/relocate_kernel: remove redundant code

Improve reporting of unexpected kernel traps due to BPF JIT failure.
(Will Deacon)
* for-next/bpf:
  arm64: Improve diagnostics when trapping BRK with FAULT_BRK_IMM

Improve robustness of user-visible HWCAP strings and their corresponding
numerical constants.
(Anshuman Khandual)
* for-next/cpuinfo:
  arm64/cpuinfo: Define HWCAP name arrays per their actual bit definitions

Cleanups to handling of SVE and FPSIMD register state in preparation
for potential future optimisation of handling across syscalls.
(Julien Grall)
* for-next/fpsimd:
  arm64/sve: Implement a helper to load SVE registers from FPSIMD state
  arm64/sve: Implement a helper to flush SVE registers
  arm64/fpsimdmacros: Allow the macro "for" to be used in more cases
  arm64/fpsimdmacros: Introduce a macro to update ZCR_EL1.LEN
  arm64/signal: Update the comment in preserve_sve_context
  arm64/fpsimd: Update documentation of do_sve_acc

Miscellaneous changes.
(Tian Tao and others)
* for-next/misc:
  arm64/mm: return cpu_all_mask when node is NUMA_NO_NODE
  arm64: mm: Fix missing-prototypes in pageattr.c
  arm64/fpsimd: Fix missing-prototypes in fpsimd.c
  arm64: hibernate: Remove unused including <linux/version.h>
  arm64/mm: Refactor {pgd, pud, pmd, pte}_ERROR()
  arm64: Remove the unused include statements
  arm64: get rid of TEXT_OFFSET
  arm64: traps: Add str of description to panic() in die()

Memory management updates and cleanups.
(Anshuman Khandual and others)
* for-next/mm:
  arm64: dbm: Invalidate local TLB when setting TCR_EL1.HD
  arm64: mm: Make flush_tlb_fix_spurious_fault() a no-op
  arm64/mm: Unify CONT_PMD_SHIFT
  arm64/mm: Unify CONT_PTE_SHIFT
  arm64/mm: Remove CONT_RANGE_OFFSET
  arm64/mm: Enable THP migration
  arm64/mm: Change THP helpers to comply with generic MM semantics
  arm64/mm/ptdump: Add address markers for BPF regions

Allow prefetchable PCI BARs to be exposed to userspace using normal
non-cacheable mappings.
(Clint Sbisa)
* for-next/pci:
  arm64: Enable PCI write-combine resources under sysfs

Perf/PMU driver updates.
(Julien Thierry and others)
* for-next/perf:
  perf: arm-cmn: Fix conversion specifiers for node type
  perf: arm-cmn: Fix unsigned comparison to less than zero
  arm_pmu: arm64: Use NMIs for PMU
  arm_pmu: Introduce pmu_irq_ops
  KVM: arm64: pmu: Make overflow handler NMI safe
  arm64: perf: Defer irq_work to IPI_IRQ_WORK
  arm64: perf: Remove PMU locking
  arm64: perf: Avoid PMXEV* indirection
  arm64: perf: Add missing ISB in armv8pmu_enable_counter()
  perf: Add Arm CMN-600 PMU driver
  perf: Add Arm CMN-600 DT binding
  arm64: perf: Add support caps under sysfs
  drivers/perf: thunderx2_pmu: Fix memory resource error handling
  drivers/perf: xgene_pmu: Fix uninitialized resource struct
  perf: arm_dsu: Support DSU ACPI devices
  arm64: perf: Remove unnecessary event_idx check
  drivers/perf: hisi: Add missing include of linux/module.h
  arm64: perf: Add general hardware LLC events for PMUv3

Support for the Armv8.3 Pointer Authentication enhancements.
(By Amit Daniel Kachhap)
* for-next/ptrauth:
  arm64: kprobe: clarify the comment of steppable hint instructions
  arm64: kprobe: disable probe of fault prone ptrauth instruction
  arm64: cpufeature: Modify address authentication cpufeature to exact
  arm64: ptrauth: Introduce Armv8.3 pointer authentication enhancements
  arm64: traps: Allow force_signal_inject to pass esr error code
  arm64: kprobe: add checks for ARMv8.3-PAuth combined instructions

Tonnes of cleanup to the SDEI driver.
(Gavin Shan)
* for-next/sdei:
  firmware: arm_sdei: Remove _sdei_event_unregister()
  firmware: arm_sdei: Remove _sdei_event_register()
  firmware: arm_sdei: Introduce sdei_do_local_call()
  firmware: arm_sdei: Cleanup on cross call function
  firmware: arm_sdei: Remove while loop in sdei_event_unregister()
  firmware: arm_sdei: Remove while loop in sdei_event_register()
  firmware: arm_sdei: Remove redundant error message in sdei_probe()
  firmware: arm_sdei: Remove duplicate check in sdei_get_conduit()
  firmware: arm_sdei: Unregister driver on error in sdei_init()
  firmware: arm_sdei: Avoid nested statements in sdei_init()
  firmware: arm_sdei: Retrieve event number from event instance
  firmware: arm_sdei: Common block for failing path in sdei_event_create()
  firmware: arm_sdei: Remove sdei_is_err()

Selftests for Pointer Authentication and FPSIMD/SVE context-switching.
(Mark Brown and Boyan Karatotev)
* for-next/selftests:
  selftests: arm64: Add build and documentation for FP tests
  selftests: arm64: Add wrapper scripts for stress tests
  selftests: arm64: Add utility to set SVE vector lengths
  selftests: arm64: Add stress tests for FPSMID and SVE context switching
  selftests: arm64: Add test for the SVE ptrace interface
  selftests: arm64: Test case for enumeration of SVE vector lengths
  kselftests/arm64: add PAuth tests for single threaded consistency and differently initialized keys
  kselftests/arm64: add PAuth test for whether exec() changes keys
  kselftests/arm64: add nop checks for PAuth tests
  kselftests/arm64: add a basic Pointer Authentication test

Implementation of ARCH_STACKWALK for unwinding.
(Mark Brown)
* for-next/stacktrace:
  arm64: Move console stack display code to stacktrace.c
  arm64: stacktrace: Convert to ARCH_STACKWALK
  arm64: stacktrace: Make stack walk callback consistent with generic code
  stacktrace: Remove reliable argument from arch_stack_walk() callback

Support for ASID pinning, which is required when sharing page-tables with
the SMMU.
(Jean-Philippe Brucker)
* for-next/svm:
  arm64: cpufeature: Export symbol read_sanitised_ftr_reg()
  arm64: mm: Pin down ASIDs for sharing mm with devices

Rely on firmware tables for establishing CPU topology.
(Valentin Schneider)
* for-next/topology:
  arm64: topology: Stop using MPIDR for topology information

Spelling fixes.
(Xiaoming Ni and Yanfei Xu)
* for-next/tpyos:
  arm64/numa: Fix a typo in comment of arm64_numa_init
  arm64: fix some spelling mistakes in the comments by codespell

vDSO cleanups.
(Will Deacon)
* for-next/vdso:
  arm64: vdso: Fix unusual formatting in *setup_additional_pages()
  arm64: vdso32: Remove a bunch of #ifdef CONFIG_COMPAT_VDSO guards
2020-10-02 12:01:41 +01:00
Ard Biesheuvel
cc383a9e24 efi: mokvar: add missing include of asm/early_ioremap.h
Nathan reports that building the new mokvar table code for 32-bit
ARM fails with errors such as

  error: implicit declaration of function 'early_memunmap'
  error: implicit declaration of function 'early_memremap'

This is caused by the lack of an explicit #include of the appropriate
header, and ARM apparently does not inherit that inclusion via another
header file. So add the #include.

Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-10-02 10:08:29 +02:00
Ard Biesheuvel
963fabf37f efi: efivars: limit availability to X86 builds
CONFIG_EFI_VARS controls the code that exposes EFI variables via
sysfs entries, which was deprecated before support for non-Intel
architectures was added to EFI. So let's limit its availability
to Intel architectures for the time being, and hopefully remove
it entirely in the not too distant future.

While at it, let's remove the module alias so that the module is
no longer loaded automatically.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-09-29 19:40:57 +02:00
Ard Biesheuvel
5ee70cd606 efi: remove some false dependencies on CONFIG_EFI_VARS
Remove some false dependencies on CONFIG_EFI_VARS, which only controls
the creation of the sysfs entries, whereas the underlying functionality
that these modules rely on is enabled unconditionally when CONFIG_EFI
is set.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-09-29 19:40:57 +02:00
Ard Biesheuvel
9846d86031 efi: gsmi: fix false dependency on CONFIG_EFI_VARS
The gsmi code does not actually rely on CONFIG_EFI_VARS, since it only
uses the efivars abstraction that is included unconditionally when
CONFIG_EFI is defined. CONFIG_EFI_VARS controls the inclusion of the
code that exposes the sysfs entries, and which has been deprecated for
some time.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-09-29 19:40:57 +02:00
Ard Biesheuvel
5d3c8617cc efi: efivars: un-export efivars_sysfs_init()
efivars_sysfs_init() is only used locally in the source file that
defines it, so make it static and unexport it.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-09-29 19:40:57 +02:00
Ard Biesheuvel
c9b51a2dbf efi: pstore: move workqueue handling out of efivars
The worker thread that gets kicked off to sync the state of the
EFI variable list is only used by the EFI pstore implementation,
and is defined in its source file. So let's move its scheduling
there as well. Since our efivar_init() scan will bail on duplicate
entries, there is no need to disable the workqueue like we did
before, so we can run it unconditionally.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-09-29 19:40:57 +02:00
Ard Biesheuvel
232f4eb639 efi: pstore: disentangle from deprecated efivars module
The EFI pstore implementation relies on the 'efivars' abstraction,
which encapsulates the EFI variable store in a way that can be
overridden by other backing stores, like the Google SMI one.

On top of that, the EFI pstore implementation also relies on the
efivars.ko module, which is a separate layer built on top of the
'efivars' abstraction that exposes the [deprecated] sysfs entries
for each variable that exists in the backing store.

Since the efivars.ko module is deprecated, and all users appear to
have moved to the efivarfs file system instead, let's prepare for
its removal, by removing EFI pstore's dependency on it.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-09-29 19:40:57 +02:00
Ard Biesheuvel
b89114cd01 efi: mokvar-table: fix some issues in new code
Fix a couple of issues in the new mokvar-table handling code, as
pointed out by Arvind and Boris:
- don't bother checking the end of the physical region against the start
  address of the mokvar table,
- ensure that we enter the loop with err = -EINVAL,
- replace size_t with unsigned long to appease pedantic type equality
  checks.

Reviewed-by: Arvind Sankar <nivedita@alum.mit.edu>
Reviewed-by: Lenny Szubowicz <lszubowi@redhat.com>
Tested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-09-29 19:40:57 +02:00
Ard Biesheuvel
d32de9130f efi/arm64: libstub: Deal gracefully with EFI_RNG_PROTOCOL failure
Currently, on arm64, we abort on any failure from efi_get_random_bytes()
other than EFI_NOT_FOUND when it comes to setting the physical seed for
KASLR, but ignore such failures when obtaining the seed for virtual
KASLR or for early seeding of the kernel's entropy pool via the config
table. This is inconsistent, and may lead to unexpected boot failures.

So let's permit any failure for the physical seed, and simply report
the error code if it does not equal EFI_NOT_FOUND.

Cc: <stable@vger.kernel.org> # v5.8+
Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2020-09-29 15:41:52 +02:00
Gavin Shan
4b2b76cbbc firmware: arm_sdei: Remove _sdei_event_unregister()
_sdei_event_unregister() is called by sdei_event_unregister() and
sdei_device_freeze(). _sdei_event_unregister() covers the shared
and private events, but sdei_device_freeze() only covers the shared
events. So the logic to cover the private events isn't needed by
sdei_device_freeze().

   sdei_event_unregister        sdei_device_freeze
      _sdei_event_unregister       sdei_unregister_shared
                                     _sdei_event_unregister

This removes _sdei_event_unregister(). Its logic is moved to its
callers accordingly. This shouldn't cause any logical changes.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20200922130423.10173-14-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
2020-09-28 21:52:23 +01:00
Gavin Shan
d2fc580d2d firmware: arm_sdei: Remove _sdei_event_register()
The function _sdei_event_register() is called by sdei_event_register()
and sdei_device_thaw() as the following functional call chain shows.
_sdei_event_register() covers the shared and private events, but
sdei_device_thaw() only covers the shared events. So the logic to
cover the private events in _sdei_event_register() isn't needed by
sdei_device_thaw().

Similarly, sdei_reregister_event_llocked() covers the shared and
private events in the regard of reenablement. The logic to cover
the private events isn't needed by sdei_device_thaw() either.

   sdei_event_register          sdei_device_thaw
      _sdei_event_register         sdei_reregister_shared
                                      sdei_reregister_event_llocked
                                         _sdei_event_register

This removes _sdei_event_register() and sdei_reregister_event_llocked().
Their logic is moved to sdei_event_register() and sdei_reregister_shared().
This shouldn't cause any logical changes.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20200922130423.10173-13-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
2020-09-28 21:52:23 +01:00
Gavin Shan
f4673625a5 firmware: arm_sdei: Introduce sdei_do_local_call()
During the CPU hotplug, the private events are registered, enabled
or unregistered on the specific CPU. It repeats the same steps:
initializing cross call argument, make function call on local CPU,
check the returned error.

This introduces sdei_do_local_call() to cover the first steps. The
other benefit is to make CROSSCALL_INIT and struct sdei_crosscall_args
are only visible to sdei_do_{cross, local}_call().

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20200922130423.10173-12-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
2020-09-28 21:52:23 +01:00
Gavin Shan
a27c04e1de firmware: arm_sdei: Cleanup on cross call function
This applies cleanup on the cross call functions, no functional
changes are introduced:

   * Wrap the code block of CROSSCALL_INIT inside "do { } while (0)"
     as linux kernel usually does. Otherwise, scripts/checkpatch.pl
     reports warning regarding this.
   * Use smp_call_func_t for @fn argument in sdei_do_cross_call()
     as the function is called on target CPU(s).
   * Remove unnecessary space before @event in sdei_do_cross_call()

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20200922130423.10173-11-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
2020-09-28 21:52:23 +01:00
Gavin Shan
b06146b698 firmware: arm_sdei: Remove while loop in sdei_event_unregister()
This removes the unnecessary while loop in sdei_event_unregister()
because of the following two reasons. This shouldn't cause any
functional changes.

   * The while loop is executed for once, meaning it's not needed
     in theory.
   * With the while loop removed, the nested statements can be
     avoid to make the code a bit cleaner.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20200922130423.10173-10-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
2020-09-28 21:52:22 +01:00
Gavin Shan
1bbc755185 firmware: arm_sdei: Remove while loop in sdei_event_register()
This removes the unnecessary while loop in sdei_event_register()
because of the following two reasons. This shouldn't cause any
functional changes.

   * The while loop is executed for once, meaning it's not needed
     in theory.
   * With the while loop removed, the nested statements can be
     avoid to make the code a bit cleaner.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20200922130423.10173-9-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
2020-09-28 21:52:22 +01:00
Gavin Shan
101119a35c firmware: arm_sdei: Remove redundant error message in sdei_probe()
This removes the redundant error message in sdei_probe() because
the case can be identified from the errno in next error message.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20200922130423.10173-8-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
2020-09-28 21:52:22 +01:00
Gavin Shan
bc110fd322 firmware: arm_sdei: Remove duplicate check in sdei_get_conduit()
The following two checks are duplicate because @acpi_disabled doesn't
depend on CONFIG_ACPI. So the duplicate check (IS_ENABLED(CONFIG_ACPI))
can be dropped. More details is provided to keep the commit log complete:

   * @acpi_disabled is defined in arch/arm64/kernel/acpi.c when
     CONFIG_ACPI is enabled.
   * @acpi_disabled in defined in include/acpi.h when CONFIG_ACPI
     is disabled.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20200922130423.10173-7-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
2020-09-28 21:52:22 +01:00
Gavin Shan
63627cae41 firmware: arm_sdei: Unregister driver on error in sdei_init()
The SDEI platform device is created from device-tree node or ACPI
(SDEI) table. For the later case, the platform device is created
explicitly by this module. It'd better to unregister the driver on
failure to create the device to keep the symmetry. The driver, owned
by this module, isn't needed if the device isn't existing.

Besides, the errno (@ret) should be updated accordingly in this
case.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20200922130423.10173-6-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
2020-09-28 21:52:22 +01:00
Gavin Shan
10fd7c42b7 firmware: arm_sdei: Avoid nested statements in sdei_init()
In sdei_init(), the nested statements can be avoided by bailing
on error from platform_driver_register() or absent ACPI SDEI table.
With it, the code looks a bit more readable.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20200922130423.10173-5-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
2020-09-28 21:52:22 +01:00
Gavin Shan
663c0e89c8 firmware: arm_sdei: Retrieve event number from event instance
In sdei_event_create(), the event number is retrieved from the
variable @event_num for the shared event. The event number was
stored in the event instance. So we can fetch it from the event
instance, similar to what we're doing for the private event.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20200922130423.10173-4-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
2020-09-28 21:52:22 +01:00
Gavin Shan
119884249f firmware: arm_sdei: Common block for failing path in sdei_event_create()
There are multiple calls of kfree(event) in the failing path of
sdei_event_create() to free the SDEI event. It means we need to
call it again when adding more code in the failing path. It's
prone to miss doing that and introduce memory leakage.

This introduces common block for failing path in sdei_event_create()
to resolve the issue. This shouldn't cause functional changes.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20200922130423.10173-3-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
2020-09-28 21:52:22 +01:00
Gavin Shan
5735f51584 firmware: arm_sdei: Remove sdei_is_err()
sdei_is_err() is only called by sdei_to_linux_errno(). The logic of
checking on the error number is common to them. They can be combined
finely.

This removes sdei_is_err() and its logic is combined to the function
sdei_to_linux_errno(). Also, the assignment of @err to zero is also
dropped in invoke_sdei_fn() because it's always overridden afterwards.
This shouldn't cause functional changes.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: James Morse <james.morse@arm.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20200922130423.10173-2-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
2020-09-28 21:52:22 +01:00
Olof Johansson
aa78dd167e ARM: soc: TI driver updates for v5.10
Consist of:
  - Add Ring accelerator support for AM65x
  - Add TI PRUSS platform driver and enable it on available platforms
  - Extend PRUSS driver for CORECLK_MUX/IEPCLK_MUX support
  - UDMA rx ring pair fix
  - Add socinfo entry for J7200
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Merge tag 'drivers_soc_for_5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone into arm/drivers

ARM: soc: TI driver updates for v5.10

Consist of:
 - Add Ring accelerator support for AM65x
 - Add TI PRUSS platform driver and enable it on available platforms
 - Extend PRUSS driver for CORECLK_MUX/IEPCLK_MUX support
 - UDMA rx ring pair fix
 - Add socinfo entry for J7200

* tag 'drivers_soc_for_5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone:
  Add missing '#' to fix schema errors:
  soc: ti: Convert to DEFINE_SHOW_ATTRIBUTE
  dmaengine: ti: k3-udma-glue: Fix parameters for rx ring pair request
  soc: ti: k3-socinfo: Add entry for J7200
  soc: ti: pruss: support CORECLK_MUX and IEPCLK_MUX
  dt-bindings: soc: ti: Update TI PRUSS bindings regarding clock-muxes
  firmware: ti_sci: allow frequency change for disabled clocks by default
  soc: ti: ti_sci_pm_domains: switch to use multiple genpds instead of one
  soc: ti: pruss: Enable support for ICSSG subsystems on K3 J721E SoCs
  soc: ti: pruss: Enable support for ICSSG subsystems on K3 AM65x SoCs
  soc: ti: pruss: Add support for PRU-ICSS subsystems on 66AK2G SoC
  soc: ti: pruss: Add support for PRU-ICSS subsystems on AM57xx SoCs
  soc: ti: pruss: Add support for PRU-ICSSs on AM437x SoCs
  soc: ti: pruss: Add a platform driver for PRUSS in TI SoCs
  dt-bindings: soc: ti: Add TI PRUSS bindings
  bindings: soc: ti: soc: ringacc: remove ti,dma-ring-reset-quirk
  soc: ti: k3: ringacc: add am65x sr2.0 support

Link: https://lore.kernel.org/r/1600656828-29267-1-git-send-email-santosh.shilimkar@oracle.com
Signed-off-by: Olof Johansson <olof@lixom.net>
2020-09-26 12:56:51 -07:00